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Copy a external fbx file uv channel to a ustaticmesh? Is it possiable?

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    Copy a external fbx file uv channel to a ustaticmesh? Is it possiable?

    Hi, i want to read a fbx(was export from UE4) through fbx sdk. then get uv channel info. like Map<PolyVertIndex,FbxVector2>.

    UStaticMesh::SetUVChannel
    bool SetUVChannel
    (
    int32 LODIndex,
    int32 UVChannelIndex,
    const TMap < FVertexInstanceID , FVector2D > & TexCoords
    )

    What is FVertexInstanceID? Is it fixed ? how to convert PolyVertIndex to FVertexInstanceID?

    Thanks.
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